a : (524 : 4 - 128) = 225,rest2
a : (131 - 128) = 225, rest 2
a : 3 = 225, rest 2
a = 3 x 225 + 2
a = 677
b : (600 : 6 - 19x5) = 163, rest 4
b : (100 - 95) = 163, rest 4
b : 5 = 163, rest 4
b = 163 x 5 + 4
b = 819
c : (9500 : 100 - 43x2) = 106, rest 8
c : (950 - 86) = 106, rest 8
c : 864 = 106, rest 8
c = 864 x 106 + 8
c = 91592